与正常运行情况相比，外部故障时流过差动继电器的不平衡电流较大。（   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69394' and id < 4492179 and id<>'4492179' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69394' and id > 4492179 and id<>'4492179' order by id asc limit 5